Water mains and service lines
Water main and service line repair in Phoenix
The buried line between the meter and the house belongs to the property. When it fails, the choice is between fixing the fault and replacing the run — and what sits on top usually decides.
Where the responsibility sits
Your water provider looks after its own side of the meter. The line running from the meter to the house is part of the property, which means a failure on it is the owner's to deal with — and, until it is dealt with, it is the owner's water going into the ground. A main losing water usually shows up on the bill long before it shows up on the surface, which is why so many of these jobs start with a bill rather than a puddle. If that is where you are, start with why your bill jumped.
Three ways it gets fixed
Repair the fault
Excavate at the located point, cut out the failed section, couple in new pipe, test and backfill. One hole. This is the right answer when the cause was mechanical — a rock bearing on the pipe, a strike from a shovel or an auger, a fitting that was never right — and when the rest of the run is sound.
Replace the run
A new line end to end. Worth doing when the pipe is old enough that the next failure is a question of when rather than whether, or when the line has already been repaired more than once. It is more ground opened at the time, and it retires the problem rather than the symptom.
Route around what you cannot put back
A driveway, a paver patio, a stamped concrete walk or mature landscaping is the part of this job that a trench cannot restore invisibly. Where the run crosses something like that, a new line on a different path is often a better answer than a trench straight through it — even though the new route is longer. That is a trade you should get to make with the facts in front of you.
What the ground does here
Caliche moves the evidence
The Valley's cemented hardpan is slow to dig, and it does something more awkward than that: water escaping below it often runs sideways along the hard layer and surfaces well away from the break. Digging where the grass is green is how people end up with several holes and no leak. Line tracing and acoustic work come first for exactly this reason.
Monsoon ground movement
Storm season wets the ground hard and then it dries out again, and soil that swells and shrinks puts strain on buried joints. It is also why backfill matters: a trench filled loosely settles after the first serious storm, taking the surface above it down with it. Compaction is part of the repair, not an extra.
Flood-irrigated lots
In Arcadia, the Biltmore area and parts of Tempe, Mesa and Laveen, water arrives at the property through a delivery gate and then travels in pipe and channels that belong to the property owner. Those gates, valves, standpipes and buried laterals are private pipe, they are frequently old, and a leak in them only shows itself on irrigation day. They are very much part of what we work on.
Repair or replace: what tips it
- The material and age of the line. A service line is usually as old as the house unless someone has replaced it, and the older materials fail differently from the newer ones.
- How many times it has been repaired. The second repair on one run is worth pausing over. The third is a conversation about replacing it.
- The length and route. A long run under hardscape is a different proposition from a short run across open decomposed granite.
- Whether the line is shared. Some older properties share a run or cross a neighbour's ground, and that needs settling before anyone digs.
What the housing stock says about service lines
In Sun City the median home dates to 1973 and 88 percent of homes predate 1980, so a service line there is often original unless it has been changed. Around Encanto and Willo, 75 percent of homes are pre-1980. At the other end of the Valley, 89 percent of Buckeye homes and 74 percent of Surprise homes have been built since 2000, where a failure is far more likely to be a one-off cause than a line at the end of its life.
Source: U.S. Census Bureau, American Community Survey 5-year estimates (2023)
What we need from you
A photo of the meter with the lid open, a photo of any wet or unusually green area, and a rough idea of where the house's shutoff is. If you can read the meter with everything in the house off, that reading is the single most useful piece of information you can hand us. More on that in water main leak detection and underground leak detection.
Questions we get every week
Straight answers
Who is responsible for the line from the meter to the house?
The property is. Providers maintain their own network and the meter; what happens on the house side of it is the owner's, including the water lost through it. If you are not sure where your responsibility begins, ask your provider before any work starts.
Will you have to dig up my driveway?
Not if there is a sensible way around it. Where a service line crosses a driveway or a paver patio, running a new line on a different route is often the better answer, because a trench through decorative hardscape cannot be put back the way it was found. We will show you both options at the located point.
Can a service line be repaired, or does it all have to be replaced?
It can very often be repaired. Whether it should be depends on material, age and history: a mechanical cause with no history is a repair, and a line on its third failure is telling you something.
Do you work on flood irrigation lines?
Yes. Once water passes the delivery gate it travels in pipe owned and maintained by the property owner — the gates, valves, standpipes and buried laterals. Those lines leak like any other buried pipe, and because they only run on irrigation day, they can lose water for a long time without anyone noticing.
Related pages
Start here
Send a photo of the meter
The meter with the lid open, plus anything wet or unusually green in the yard, is enough for us to tell you what we are probably looking at.
Water running now?
Shut it off at the house if you safely can, then call. Do not wade into standing water near anything electrical.
Send it in writing